Which Animal Is Bilaterally Symmetrical and Has a Pair of Ganglia

question 55

Multiple Choice

Which animal is bilaterally symmetrical and has a pair of ganglia instead of a true brain?​

• A) ​jellyfish
• B) planarian​
• C) ​earthworm
• D) ​grasshopper
• E) ​centipede

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Definitions:

Esophageal Reflux

The backward flow of stomach acid into the esophagus, causing heartburn and potential damage.

Pyrosis

Another term for heartburn, a burning sensation in the chest caused by gastroesophageal reflux.

Acid Indigestion

A common condition of the stomach that results in a burning sensation or discomfort, often due to acidity or gastroesophageal reflux.

Dysphagia

Difficulty or discomfort in swallowing, often indicative of a disorder in the throat or esophagus.